<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/request-demo/req2" method="post">
    <input type="text" name="username"> <br>
    <input type="text" name="password"> <br>
    <input type="checkbox" name="hobby" value="1">篮球
    <input type="checkbox" name="hobby" value="2">足球 <br>
    <input type="submit">
</form>
</body>
</html>